Heavy-Duty Thermal In Stock

ThermoKing 1L

1-Liter Heavy-Duty Vacuum Insulated Stainless Steel Thermos

Price: C$ 35.50

Engineered with double-wall copper-lined vacuum insulation, the ThermoKing 1L keeps drinks hot for up to 18 hours and chilled for 24 hours. Built tough for backcountry expeditions and demanding workdays.

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BPA & Phthalate Free

Standard Fast Shipping

Practical Engineering & Thermal Retention

The ThermoKing 1L delivers uncompromising thermal performance whether you are braving sub-zero winter commutes or trekking across remote summer trails.

Constructed from dual-wall 18/8 pro-grade stainless steel with an interior copper coating, this flask creates a reliable thermal barrier. It prevents heat transfer through convection, so piping hot coffee stays steaming throughout entire shifts, while iced water stays refreshing even inside a sun-baked vehicle.

An insulated twist-and-pour stopper allows smooth, splash-free pouring without removing the inner seal completely, minimizing heat loss during every pour. The exterior powder-coat finish ensures a steadfast grip in wet or gloved hands while preventing sweat and condensation.

Field Tested Reliability

Equip Your Daily Expedition with ThermoKing

Experience zero leaks, tough impact resistance, and unyielding temperature retention across every season.

Built for Tough Conditions

24-Hour Cold / 18-Hour Hot Copper vacuum barrier preserves precise beverage temperatures through all four Canadian seasons.

18/8 Pro-Grade Steel Corrosion-resistant steel interior prevents metallic tastes, flavor transfer, and lingering odors.

360° Pour Stopper Smooth flow channels allow clean pouring into the integrated insulated cup with a single half-twist.

Condensation-Free Exterior Matte textured exterior never sweats or conducts exterior heat, keeping hands dry and secure.

Maintenance & Handling Instructions

Optimal Thermal Care Guidelines

Pre-condition with boiling or ice water for five minutes prior to filling to maximize thermal efficiency.
Hand wash the bottle body with warm water, mild detergent, and a soft brush to protect the vacuum seal.
Disassemble the stopper silicone gasket periodically for a thorough rinse and air dry before reassembly.
Avoid microwaving, freezing, or placing directly on stovetops and open flames.

Technical Specifications

Capacity	1000 ml (33.8 fl oz)
Material	Kitchen-Grade 18/8 Stainless Steel, BPA-Free Polypropylene
Dimensions & Weight	31.5 cm x 9.2 cm / 520 g empty
Thermal Retention	Hot: 18 Hours \| Cold: 24 Hours \| Ice: Up to 48 Hours
Lid System	Twist-and-Pour Stopper with Dual-Purpose Thermal Cup Cap